@misc{indiciae7adc8f27dcc7,
  title = {Experience with unpowered terminal-area instrument approaches},
  author = {Gaidsick, H. G. and Gee, S. W. and Schofield, B. L.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700031644},
  note = {Source identifier: 19700031644}
}